CVE-2021-33582

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

3.07% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 86.5% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-09-01 05:32Z5 YR AGO

Last updated

2024-08-03 23:50Z2 YR AGO

Reserved

2021-05-26

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-407Inefficient Algorithmic ComplexityClass
• CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

047aed7b6cea0279e5de7efe39087c9ffd8705725e63251c82c8dd0f78502d22

• www.cyrusimap.orghttps://www.cyrusimap.org/imap/download/release-notes/index.htmlx_refsource_MISC
• github.comhttps://github.com/cyrusimap/cyrus-imapd/security/advisoriesx_refsource_MISC
• github.comhttps://github.com/cyrusimap/cyrus-imapd/commits/masterx_refsource_MISC
• cyrus.topicbox.comhttps://cyrus.topicbox.com/groups/announce/T3dde0a2352462975-M1386fc44adf967e072f8df13/cyrus-imap-3-4-2-3-2-8-and-3-0-16-releasedx_refsource_CONFIRM
• lists.fedoraproject.orgFEDORA-2022-c30b1a8aa3https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJZB45QBUN7CZFGOWCZYUYACNBTX7LVS/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2022-d45bcc5447https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6HEO3RURJW6NLIXS7NK5PVU6MGHC4SCM/vendor-advisoryx_refsource_FEDORA
• lists.debian.org[debian-lts-announce] 20220619 [SECURITY] [DLA 3052-1] cyrus-imapd security updatehttps://lists.debian.org/debian-lts-announce/2022/06/msg00013.htmlmailing-listx_refsource_MLIST